4003213405 has 4 divisors (see below), whose sum is σ = 4803856092. Its totient is φ = 3202570720.

The previous prime is 4003213399. The next prime is 4003213429. The reversal of 4003213405 is 5043123004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 547419609 + 3455793796 = 23397^2 + 58786^2 .

It is not a de Polignac number, because 4003213405 - 2¹⁷ = 4003082333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400321336 + ... + 400321345.

It is an arithmetic number, because the mean of its divisors is an integer number (1200964023).

Almost surely, 2^4003213405 is an apocalyptic number.

It is an amenable number.

4003213405 is a deficient number, since it is larger than the sum of its proper divisors (800642687).

4003213405 is an equidigital number, since it uses as much as digits as its factorization.

4003213405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800642686.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 4003213405 is about 63270.9523004040. The cubic root of 4003213405 is about 1587.8260183959.

Adding to 4003213405 its reverse (5043123004), we get a palindrome (9046336409).

The spelling of 4003213405 in words is "four billion, three million, two hundred thirteen thousand, four hundred five".